Lubricator apparatus



FIG. 1 is a perspective view of a lubricator apparatus showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a cross-sectional view thereof along section 5-5 of FIG. 4.

The portions shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a lubricator apparatus, as shown and described. 